Download size

How many GB is M.A.R.S.?

10 GB

Leave at least 17 GB free: games need headroom to unpack updates.

The figure is the storage Steam lists as required for this game, not a measured download.

MARS is a Third Person Shooter brimming with creativity and unique features long forgotten in this day of modern AAA games. From the hilarious Headhunter mode, to Huge Mecha vs Mecha battles, to fully customizable loadouts; MARS is a gem to behold amongst the TPS genre.